Valve-silencer



Y F. GRINHAM.

VALVE SILENCER.

APPLICATION FILED JUNE24. 1921.

1,390,529, I PatentedSept. 13,1921.

f 'blfeni'or:

U ED S ATES rRnnERIcKcRI'NaA or s rQLoUis, Maean-1,,assesses-or;seamstress HENRYVW. SPALDING, ONE -FQURTH roi-a'ormjo,STILES, nn o in-roun'rn To GEQRGE r. WARD, 011 ,sr'no iis, ivrrssjonai.

v'ALv sILn ioER.

Specification of etters 'ra'tent.

Application filed June 24, 1921. SeriaINo. 480,040.

T 0 all whom it may concern:

Be it known that I, FREDERICK GRINHAM,

a citizen of the United States, residing at the clty of St. Louis, inthe State 'ofMissouri, have invented certain new and useful Improvementsin- Valve-Silencers, of which part of this specification, in which likenumbers of reference denote like parts wherever they occur,

Figure 1 is a perspective view of this device;

Fig. 2 is a top plan view showing the same in position and taken on theline 2-2 in Fig. 3, looking in the direction indicated by the arrows; V

Fig. 3 is a vertical sectional view through the engine-block and showingthis device in position; and r e Fig. 4 isa front elevational view takenat a right-angle to Fig. 3. j

The valve-silencer 1 may be made of any suitable mtiterial but may bepreferably made of fiberboard, as the same possesses noise-deadeningqualities that other materials lack, especially when considered inconjunction With cheapness, lightness, flexibility, and durability. V

' The device 1 is, as shown in Fig. 1, substantially elliptical in shapeand contains a central slot 2, also substantially elliptical in form. V

. The specific noise intended to be obviated by this device is the knockor rattle of the lifter-lock 3 against the engine-block 4:. Toaccomplish this the silencer 1 is bent in the shape best seen in Fig. 3,in which the pushrod 5 passes through that part of slot 2 in silencer 1that occupies a horizontal plane where the ends of silencer 1 have beenbent to substantially a right-angle with the'mainy p hereof.- Is h s reeiee the o g side-members of silencer 1 rest against engine-block 4 andlie between the same and at n d. i t a1 1-i the lifter-lock 3' like abuffer or gasket,

while the lower end part of silencer 1 is in-.

terposed between the lower part of lifter: lock 3 and the shoulder 6 ofengine-block rattles, and thus all rattle 'of'lifter-lock 3 againstadjacent parts is prevented.

The silencer 1 must not be creased, for it will break.

60 4.0m which lifter-lock 3 normallyabuts and In order to place thesilencer 1 in working position certain mechanical adjustments arenecessary, but with the foregoing explanation of the ultimate locationand position i and function of the silencer 1 a mechanic skilled withsuch engine constructions will readily see what parts must be taken outor loosened and replaced.

The installation of this device Will stop 1 valve-tappet noise andprolongs the life of tappet-locks and saves the expense of refitting andreplacing tappet-locks. It keeps the valve-lifter from twisting andturning, q 7 thereby making it ride squarely on the valvelifter cams,and prevents extra wear on valve-lifter cams and lifter;

The elliptical silencer-member 1 may be of any desired size ordimension, but is:

preferably of about the thickness of thick paper or thin fiberboard andsomewhat more than two inches in length. Naturally it will be made ofsuch length and width and thickness as will best suit theparticular'location for whichit is intended. It can be stamped out inquantities. 7

Having thus described this invention, I

hereby reserve the benefit of all changes in form arrangement, order, oruse of parts,

' as it is evident that many minor changes may be made therein withoutdeparting from the spirit ofthis invention or the scope of the followingclaims.

I claim: 1

1. A valve silencer comprising a piece of non-metallic substance havinga hole in its center, the same being elongated in its longitudinaldimension,"and adapted to serve as a buffer on two surfaces of amovablemember. I I

2. A valve silencer comprising a piece of non-metallic substance havinga hole in its center, the same being elongated in its longitudinaldimension and adapted to serve i g i g M 1,390,52e

3. The combination of a stationary block,

a rod adapted to slide with relation thereto,

a shoulder borne by the said block and having a passage therethrough forthe said movable-member, an enlargement borne by the saidmovable-member, and a silencer acting as a butler for an end and sideofthe 10 said enlargement, the saidfsilencer, comprising an elongatedrelatively thin flexible fiber annulus, the 1said'moVable-memberipassing throughtwo partsof the said hole.

In testimony whereof I hereunto afiix my 15 signature.

FREDERICK GRIN-HAM."

